Coding apparatus and method, decoding apparatus and method, and program storage medium

Abstract

In order to obtain coded data which does not strike viewers and listeners as being incongruous, when plural audio data are to be coded, a coding program groups the respective audio data into one audio data, codes the grouped audio data in sequence with a predetermined number of samples being treated as units, and sets delimitations corresponding to the delimitations of the plural audio data in the coded data at coding units of the coded data.

What is claimed is: 
     
       1. An apparatus comprising:
 a display configured to display titles of a plurality of content data; 
 a user interface configured to receive a selection of one of the content data in a group; and 
 circuitry configured to:
 determine a relationship between the content data and a next content data by determining if the content data and the next content data are in the same group, and 
 playback the content data and the next content data sequentially so that soundless time period is removed between playbacks of the content data and the next content data according to the relationship. 
 
 
     
     
       2. The apparatus according to  claim 1 , wherein the circuitry deletes a header from coded data of the next content data when the circuitry determines coded data of the content data and the coded data of the next content data are sequential. 
     
     
       3. The apparatus according to  claim 1 ,
 wherein the circuitry playbacks the content data and the next content data sequentially by overlapping a first portion of decoded orthogonal transform block of the content data and a second portion of decoded orthogonal transform block of the next content data. 
 
     
     
       4. The apparatus according to either one of  claims 1 - 3 , wherein the content data is data recorded on a disk. 
     
     
       5. The apparatus according to  claim 3 , wherein the circuitry overlaps the first portion and the second portion by adding a back portion of samples created by applying an IMDCT (Inverse Modified Discrete Cosine Transform) on a sound unit of the content data and a forward portion of samples created by applying the IMDCT (Inverse Modified Discrete Cosine Transform) on a sound unit of the next content data. 
     
     
       6. The apparatus according to  claim 1 , wherein the content data and the next content data are musical pieces, and the circuitry determines the relationship between the content data and the next content data by determining if track numbers corresponding to the content data and the next content data are in sequence. 
     
     
       7. The apparatus according to  claim 1 , wherein the circuitry is configured to determine if the content data and the next content data are in the same group by determining if numbers corresponding to the content data and the next content data are in sequence. 
     
     
       8. A method, implemented on an apparatus, comprising:
 displaying, using a display, titles of a plurality of content data; 
 receiving, at a user interface, a selection of one of the content data in a group; 
 determining, using circuitry, a relationship between the content data and a next content data by determining if the content data and the next content data are in the same group, and 
 playing back the content data and the next content data sequentially so that soundless time period is removed between playbacks of the content data and the next content data according to the relationship. 
 
     
     
       9. The method according to  claim 8 , comprising deleting a header from coded data of the next content data when the circuitry determines coded data of the content data and the coded data of the next content data are sequential. 
     
     
       10. The method according to  claim 8 , comprising overlapping a first portion of decoded orthogonal transform block of the content data and a second portion of decoded orthogonal transform block of the next content data. 
     
     
       11. The method according to either one of  claims 8 - 10 , wherein the content data is data recorded on a disk. 
     
     
       12. The method according to  claim 10 , wherein the overlapping overlaps the first portion and the second portion by adding a back portion of samples created by applying an IMDCT (Inverse Modified Discrete Cosine Transform) on a sound unit of the content data and a forward portion of samples created by applying the IMDCT (Inverse Modified Discrete Cosine Transform) on a sound unit of the next content data. 
     
     
       13. The method according to  claim 8 , wherein the content data and the next content data are musical pieces, and the determining determines the relationship between the content data and the next content data by determining if track numbers corresponding to the content data and the next content data are in sequence. 
     
     
       14. A non-transitory computer readable medium that stores a program which when executed by a computer, causes the computer to perform a method comprising:
 displaying titles of a plurality of content data; 
 receiving a selection of one of the content data in a group; 
 determining a relationship between the content data and a next content data by determining if the content data and the next content data are in the same group, and 
 playing back the content data and the next content data sequentially so that soundless time period is removed between playbacks of the content data and the next content data according to the relationship. 
 
     
     
       15. The non-transitory computer readable medium according to  claim 14 , comprising deleting a header from coded data of the next content data when the circuitry determines coded data of the content data and the coded data of the next content data are sequential. 
     
     
       16. The non-transitory computer readable medium according to  claim 14 , comprising overlapping a first portion of decoded orthogonal transform block of the content data and a second portion of decoded orthogonal transform block of the next content data. 
     
     
       17. The non-transitory computer readable medium according to either one of  claims 14 - 16 , wherein the content data is data recorded on a disk. 
     
     
       18. The non-transitory computer readable medium according to  claim 16 , wherein the overlapping overlaps the first portion and the second portion by adding a back portion of samples created by applying an IMDCT (Inverse Modified Discrete Cosine Transform) on a sound unit of the content data and a forward portion of samples created by applying the IMDCT (Inverse Modified Discrete Cosine Transform) on a sound unit of the next content data. 
     
     
       19. The non-transitory computer readable medium according to  claim 14 , wherein the content data and the next content data are musical pieces, and the determining determines the relationship between the content data and the next content data by determining if track numbers corresponding to the content data and the next content data are in sequence.